MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous external URIs, many hosted on disposable domains and configured as a link farm with UTM parameters, strongly suggests a phishing or malware distribution campaign. The 'Urgency Lure' and 'Callback Lure' heuristics further support a social engineering pretext, likely to trick users into clicking malicious links or engaging with fraudulent services.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://knupress.com/pds/editor/file/14360418537.pdf In PDF document text
- https://bushregenerators.net/userfiles/files/sitekalabidukagi.pdfIn PDF document text
- http://hidramaco.com/files/files/66155653137.pdfIn PDF document text
- https://www.afoa.org.ar/backend/ckfinder/userfiles/files/wepopowokatodimefuvinof.pdfIn PDF document text
- http://hagelkonzept.de/userfiles/file/33333117969.pdfIn PDF document text
- https://daotaolaixesontay.com/uploads/file/wuwuf.pdfIn PDF document text
- https://www.alapan.org/fckimages/file/99206271922.pdfIn PDF document text
- http://komodovo.ru/upload_picture/24211635703.pdfIn PDF document text
- http://freestyler.cz/img/file/98422155072.pdfIn PDF document text
- http://chataphan.com/file_media/file_image/file/wimuledoxudedi.pdfIn PDF document text
- https://konchris.com/userfiles/file/1631066956.pdfIn PDF document text
- https://detector-billetes.com/Imagenes/file/vufalurefemafubonegok.pdfIn PDF document text
- http://fu-xin.tw/uploads/files/202109080522497762.pdfIn PDF document text
- https://lwim-ouargla.dz/ar/files/banosujute.pdfIn PDF document text
- http://wu-pao.com/upfiles/editor/files/sabomavopokepisefufu.pdfIn PDF document text
- https://equinox-e.com/upload/UserFiles/file/15997216278.pdfIn PDF document text
- http://dochoiotovn.com/uploads/userfiles/file/burevajalo.pdfIn PDF document text
- http://www.ciesol.com/ckfinder/userfiles/files/tirategafafu.pdfIn PDF document text
- http://itexpertdog.nwoasis.com/upload/files/jexibove.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6dddeced3---14566944223.pdfIn PDF document text
- https://gbp.dropship-online.com/userfiles/files/60929155220.pdfIn PDF document text
- http://www.depomatrial.com/file/20581598491.pdfIn PDF document text
- https://obermeyer-modemarkt.de/upload/file/babaralikenupupij.pdfIn PDF document text
- http://futimisdev.com/userfiles/file/24414687351.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=gta+roleplay+android+downloadPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d866.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD866 | 10456 bytes |
SHA-256: 0d1921cf4263bd7093e62b71c3b467b3ca04a04409adf5fa7e2121796ff56393 |
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font_01_sfnt_off0000f04b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF04B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001085d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1085D | 18196 bytes |
SHA-256: 68df47550e4b7dbdde4d13d70dbd1139ad93711186704d5bd8951994f5d02cfc |
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